CN109504523A - A kind of regeneration method rolling waste lubricating oil - Google Patents

A kind of regeneration method rolling waste lubricating oil Download PDF

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Publication number
CN109504523A
CN109504523A CN201910001436.5A CN201910001436A CN109504523A CN 109504523 A CN109504523 A CN 109504523A CN 201910001436 A CN201910001436 A CN 201910001436A CN 109504523 A CN109504523 A CN 109504523A
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CN
China
Prior art keywords
regeneration
lubricating oil
waste lubricating
oil
rolling waste
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910001436.5A
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Chinese (zh)
Inventor
韩生
常伟
赵豆豆
叶伟林
蔺华林
陈凤飞
连俊
薛原
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Shanghai Institute of Technology
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Shanghai Institute of Technology
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Priority to CN201910001436.5A priority Critical patent/CN109504523A/en
Publication of CN109504523A publication Critical patent/CN109504523A/en
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0008Working-up used lubricants to recover useful products ; Cleaning with the use of adsorbentia
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M175/00Working-up used lubricants to recover useful products ; Cleaning
    • C10M175/0016Working-up used lubricants to recover useful products ; Cleaning with the use of chemical agents

Abstract

The invention discloses a kind of regeneration methods for rolling waste lubricating oil.This method, which mainly comprises the steps that, to be heated rolling waste lubricating oil first and stands removal of impurities, then rolling waste lubricating oil is taken to be heated to 30-80 DEG C, ferric chloride solution is added thereto, a certain amount of sodium hydroxide solution is added immediately, after being stirred continuously 2-10min, it adds flyash to continue to stir 5-15min, finally be centrifuged mixture, the base oil after obtained supernatant is namely regenerated.This method carries out flocculation treatment in advance to rolling waste lubricating oil using inorganic flocculating agent, then waste lubricating oil is rolled using the further absorption regeneration of flyash, the base oil obtained using the method, its physicochemical property and service performance have obtained effective recovery, and this method is simple to operation, clean and environmental protection, while solving the problems such as the taking up a large area of conventional regeneration technique, energy consumption is high, operating cost is high, environmental pollution is serious.

Description

A kind of regeneration method rolling waste lubricating oil
Technical field
The present invention relates to a kind of regeneration methods for rolling waste lubricating oil, belong to petroleum-based energy technical field.
Background technique
Rolling waste lubricating oil is the waste oil replaced in rolling process.In recent years, with the rapid hair of China's industry Exhibition, trade waste also quickly generate, and rolling waste lubricating oil is exactly one such.Due to the sundries in rolling waste lubricating oil It is more complicated, it is larger to recycle difficulty, so most of factory carries out after collecting rolling waste lubricating oil directly as fuel Burning can't help producing great waste using this method processing waste rolling oil, and in the burned of rolling waste lubricating oil Also a large amount of toxic gas is given off in journey, polluted environment.Therefore it cannot be neglected today in current oil crisis, rolling is useless The recycling and reusing of lubricating oil has received people and more and more payes attention to.
In rolling waste lubricating oil, impurity therein is mainly the harmful substances such as metallic particles, moisture, pitch, colloid, is accounted for Overall 15% or so, however 80% or more the ingredient for rolling waste lubricating oil is all base oil.Roll waste lubricant oil regeneration skill Art is mainly the impurity removed in waste rolling oil, extracts useful base oil, restores its service performance, makes to extract base oil Physicochemical property reach the standard of fresh oil, and can come into operation.The regeneration technology of rolling waste lubricating oil is predominantly following at present It is several: the clay-filtered technique of sulfuric acid-, solvent refining processes, hydrofining technology, short-path distillation regeneration technology, supercritical extract Technique etc..Since China in terms of rolling waste lubricant oil regeneration due to starting late, production scale is smaller etc., waste lubricating oil is rolled Regeneration technology development is slower, and domestic regeneration techniques rest on sulfuric acid-carclazyte technique more, but the technique disappears in process of production Consume a large amount of sulfuric acid and carclazyte, great waste of resource, pollution environment.
Summary of the invention
The purpose of the present invention is to solve the deficiencies of the rolling waste lubricant oil regeneration, provide a kind of inorganic flocculation-suction The method of attached regeneration rolling waste lubricating oil.It is effectively wadded a quilt with cotton in this method by the synergistic effect of sodium hydroxide and ferric hydroxide colloid The impurity such as the solidifying polarity colloid removed in rolling waste oil, asphalitine, lipid, organic acid, then adding adsorbent can effectively inhale The solid and partial colloidal impurity of bulky grain in attached rolling waste lubricating oil, while the sedimentation speed of aggregate after flocculation can be improved Rate improves the rate of recovery of oil product.This method is at low cost, easy to operate, low energy consumption and environmental pollution is small, can be effectively to rolling Waste lubricating oil processed carries out regeneration, has a good application prospect.
To achieve the above object, the present invention provides a kind of regeneration method for rolling waste lubricating oil, the specific steps are as follows:
(1) rolling waste lubricating oil is heated and stands 2-4 days, pre-processed;
(2) it takes 50-100ml rolling waste lubricating oil to be heated to 30-80 DEG C, 4-10ml ferric chloride solution is added thereto, with The sodium hydroxide solution of 10-30ml is added, is stirred continuously 2-10min;
(3) 1.0-3.0g flyash is added into the mixture of step (2) to continue to stir 5-30min, finally by mixture It is centrifuged 5-10min, the base oil after obtained supernatant is namely regenerated.
In above-mentioned steps (1), heating temperature is 30~60 DEG C.
In above-mentioned steps (2), the concentration of ferric chloride solution is 0.1-0.2mol/L.With iron chloride and sodium hydroxide plus Membership generates cotton-shaped ferric hydroxide colloid in mixed liquor, and can effectively flocculate the impurity removed in waste oil, while hydroxide The addition of sodium can also go out the lipid of part, the impurity of organic acid.In above-mentioned steps (2), the concentration of sodium hydroxide solution For 0.8-1.5mol/L.
In above-mentioned steps (2), mixing speed 300-800r/min.
In above-mentioned steps (3), flyash is before use, remove bulk impurity and 200-300 mesh with 50-100 mesh screen respectively Sieve removes the too small flyash of partial size.The addition of flyash effectively can generate absorption to large granular impurity and colloid and make With, and the density of adsorbent is relatively bigger, can accelerate the rate of settling of aggregate after flocculation.
In above-mentioned steps (3), mixing speed 300-500r/min.
In above-mentioned steps (3), the centrifugal rotational speed of centrifuge is 500-1500r/min.
A kind of regeneration method of rolling waste lubricating oil of the invention, can effectively remove bulky grain solid in waste oil, The impurity such as colloid, pitch and oxide.The method that the invention combines inorganic flocculation and Powder ash adsorption, reasonably by waste powder Coal ash re-uses, and is a kind of environmentally protective, energy-efficient regeneration rolling waste lubricating oil new process.
Compared with existing preparation method, beneficial effects of the present invention are as described below:
1, the method achieve the New Regenerated techniques of anacidity, organic solvent-free.
2, waste material flyash is recycled again, environmentally protective, reclaimed oil performance is close with fresh oil.
3, rolling waste oil is regenerated using inorganic flocculation-adsorption process, it is easy to operate, low energy consumption, expense is low, without dirt Dye, has a good application prospect.
Detailed description of the invention
Fig. 1 is the comparison diagram of the oil and reclaimed oil after rolling waste lubricating oil, flocculation in embodiment 1.
Fig. 2 is the ultraviolet transmission figure of reclaimed oil in each embodiment.
Fig. 3 is the rate of recovery figure of reclaimed oil in each embodiment.
Specific embodiment
Below by specific embodiment, the invention will be further described, but is not intended to limit the scope of application of the invention.
Embodiment 1
A kind of regeneration method rolling waste lubricating oil, specifically includes the following steps:
(1) rolling waste lubricating oil is heated to 60 DEG C and stands 4 days, pre-processed;
(2) it takes 50ml rolling waste lubricating oil to be heated to 60 DEG C, it is molten that the iron chloride that 6ml concentration is 0.2mol/L is added thereto Liquid, the concentration that 15ml is added immediately is the sodium hydroxide solution of 1.0mol/L, is stirred continuously 5min under the revolving speed of 500r/min;
(3) flyash is screened respectively with 100 and 250 mesh screens, then mixture enters 2.0g powder in step (2) Coal ash continues to stir 20min at 500r/min, mixture is finally centrifuged 10min at 1000r/min, obtained supernatant Base oil after liquid is namely regenerated.
In the present embodiment, waste lubricating oil, the oil after flocculation and reclaimed oil are rolled as shown in Figure 1, reclaimed oil it is ultraviolet Absorbance is as shown in Fig. 2, shown in rate of recovery Fig. 3 of reclaimed oil, physicochemical property such as 1 institute of table of regenerated oil after flocculation and after absorption Show, and is denoted as flocculation oil and example 1 respectively.
Embodiment 2
A kind of regeneration method rolling waste lubricating oil, specifically includes the following steps:
(1) rolling waste lubricating oil is heated to 30 DEG C and stands 2 days, pre-processed;
(2) it takes 80ml rolling waste lubricating oil to be heated to 30 DEG C, the iron chloride that 4ml isoconcentration is 0.1mol/L is added thereto Solution, the concentration that 10ml is added immediately is the sodium hydroxide solution of 0.8mol/L, is stirred continuously under the revolving speed of 300r/min 2min;
(3) flyash is screened respectively with 100 and 300 mesh screens, then mixture enters 1.0g powder in step (2) Coal ash continues to stir 5min at 300r/min, mixture is finally centrifuged 10min at 1500r/min, obtained supernatant Base oil after namely regenerated.
In the present embodiment, reclaimed oil ultraviolet absorptivity as shown in Fig. 2, reclaimed oil the rate of recovery as shown in figure 3, regeneration The physicochemical property of oil afterwards is as shown in table 1.
Table 1 rolls the physicochemical property of waste lubricating oil, reclaimed oil and fresh oil
It is compared by 1 data above of table it can be found that being wanted by the performance of the reclaimed oil after inorganic flocculation-absorption regeneration Waste lubricating oil is far superior to rolled, and the metallic element in oil substantially completely removes, and reclaimed oil is viscous from appearance, movement The aspect such as degree, water content has different promotions.It is found from the comparison of embodiment 1 and embodiment 2, when chlorination in flocculation process When the dosage of iron and Strong oxdiative sodium increases, the physical property of reclaimed oil obtains higher promotion, and the content of metallic element also obtains It is significant to reduce.Therefore, the basic oil quality that the regeneration method of rolling waste lubricating oil provided by the present invention obtains is preferable.
Embodiment 3
A kind of regeneration method rolling waste lubricating oil, specifically includes the following steps:
(1) rolling waste lubricating oil is heated to 40 DEG C and stands 4 days, pre-processed;
(2) it takes 80ml rolling waste lubricating oil to be heated to 80 DEG C, the chlorination that 10ml isoconcentration is 0.2mol/L is added thereto Ferrous solution, the concentration that 20ml is added immediately is the sodium hydroxide solution of 1.5mol/L, is stirred continuously under the revolving speed of 800r/min 10min;
(3) flyash is screened respectively with 50 and 200 mesh screens, then mixture enters 3.0g powder in step (2) Coal ash continues to stir 30min at 400r/min, mixture is finally centrifuged 8min at 800r/min, obtained supernatant Base oil after namely regenerated.
In the present embodiment, the ultraviolet absorptivity of reclaimed oil is as shown in Fig. 2, the rate of recovery of reclaimed oil is as shown in Figure 3.
Embodiment 4
A kind of regeneration method rolling waste lubricating oil, specifically includes the following steps:
(1) rolling waste lubricating oil is heated to 40 DEG C and stands 4 days, pre-processed;
(2) it takes 50ml rolling waste lubricating oil to be heated to 40 DEG C, the iron chloride that 9ml isoconcentration is 0.2mol/L is added thereto Solution, the concentration that 20ml is added immediately is the sodium hydroxide solution of 1.5mol/L, is stirred continuously under the revolving speed of 500r/min 8min;
(3) flyash is screened respectively with 100 and 300 mesh screens, then mixture enters 3.0g powder in step (2) Coal ash continues to stir 30min at 500r/min, mixture is finally centrifuged 10min at 1000r/min, obtained supernatant Base oil after liquid is namely regenerated.
In the present embodiment, the ultraviolet absorptivity of reclaimed oil is as shown in Fig. 2, the rate of recovery of reclaimed oil is as shown in Figure 3.
From in Fig. 2 it was found that ultraviolet transmission (74.3%) highest of the reclaimed oil in embodiment 4, the row of embodiment 1 It is minimum in the reclaimed oil ultraviolet transmission (73.5%) of second (74.1%), embodiment 2, this is because in example 4, The dosage of flocculated stage iron chloride and sodium hydroxide is higher, is also highest in the flyash dosage of absorption phase, so causing The content that well cuts are regenerated in embodiment 4 is minimum, so that its ultraviolet transmission is highest.From Fig. 3 it has also been discovered that, With the increase of the removal amount of regeneration well cuts, the rate of recovery of reclaimed oil is reduced, so the performance of the reclaimed oil in embodiment 4 It is best.
The above is only the citing of embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, without departing from the technical principles of the invention, several improvement can also be made, these improvement also should be regarded as this The protection scope of invention.

Claims (8)

1. a kind of regeneration method for rolling waste lubricating oil, which is characterized in that specific step is as follows:
(1) rolling waste lubricating oil is heated and stands 2-4 days, pre-processed;
(2) take 50-100ml rolling waste lubricating oil be heated to 30-80 DEG C, thereto be added 4-10ml ferric chloride solution, immediately plus The sodium hydroxide solution for entering 10-30ml, is stirred continuously 2-10min;
(3) 1.0-3.0g flyash is added into the mixture of step (2) to continue to stir 5-30min, is finally centrifuged mixture 5-10min, the base oil after obtained supernatant is namely regenerated.
2. regeneration method as described in claim 1, which is characterized in that in step (1), heating temperature is 30~60 DEG C.
3. regeneration method as described in claim 1, which is characterized in that in step (2), ferric chloride solution it is dense
Degree is 0.1-0.2mol/L.
4. regeneration method as described in claim 1, which is characterized in that in step (2), sodium hydroxide solution
Concentration is 0.8-1.5mol/L.
5. regeneration method as described in claim 1, which is characterized in that in step (2), mixing speed 300-800r/min.
6. regeneration method as described in claim 1, which is characterized in that in step (3), flyash before use, use 50- respectively 100 mesh screens remove bulk impurity and 200-300 mesh screen removes the too small flyash of partial size.
7. regeneration method as described in claim 1, which is characterized in that in step (3), mixing speed 300-500r/min.
8. regeneration method as described in claim 1, which is characterized in that in step (3), the centrifugal rotational speed of centrifuge is 500- 1500r/min。
CN201910001436.5A 2019-01-02 2019-01-02 A kind of regeneration method rolling waste lubricating oil Pending CN109504523A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103865626A (en) * 2014-03-11 2014-06-18 重庆工商大学 Acid-base-free regeneration method of waste machine oil
CN105754706A (en) * 2016-04-26 2016-07-13 上海应用技术学院 Method for regenerating waste rolling oil
CN106147978A (en) * 2015-04-27 2016-11-23 宝钢不锈钢有限公司 For rolling device and the using method thereof of greasy filth solid-liquid separation and resource reclaim
CN107881000A (en) * 2017-11-17 2018-04-06 苏州博进生物技术有限公司 Method for mineral regenerating waste oil
CN108913325A (en) * 2018-06-01 2018-11-30 上海大学 The method of solvent extraction combination composite metal oxide adsorbent regeneration waste lubricating oil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103865626A (en) * 2014-03-11 2014-06-18 重庆工商大学 Acid-base-free regeneration method of waste machine oil
CN106147978A (en) * 2015-04-27 2016-11-23 宝钢不锈钢有限公司 For rolling device and the using method thereof of greasy filth solid-liquid separation and resource reclaim
CN105754706A (en) * 2016-04-26 2016-07-13 上海应用技术学院 Method for regenerating waste rolling oil
CN107881000A (en) * 2017-11-17 2018-04-06 苏州博进生物技术有限公司 Method for mineral regenerating waste oil
CN108913325A (en) * 2018-06-01 2018-11-30 上海大学 The method of solvent extraction combination composite metal oxide adsorbent regeneration waste lubricating oil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WEI CHANG 等: "Regeneration of waste rolling oil via inorganic", 《PETROLEUM SCIENCE AND TECHNOLOGY》 *

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